小编Moh*_*job的帖子

我有自定义相机应用程序.当我将手机旋转90度时,相机预览工作正常.但是当我将手机快速旋转180度时,相机预览会颠倒过来.有没有解决方案......

这是我的代码如下:

public class CustomCameraActivity extends Activity implements
    SurfaceHolder.Callback {

Camera camera;
SurfaceView surfaceView;
SurfaceHolder surfaceHolder;
boolean previewing = false;
LayoutInflater controlInflater = null;
private Sensor mOrientaion1;
int cameraId = 0;
public final String TAG = "CustomCamera";
private SensorManager sensorManager;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.main);

    context = this;

    sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);
    mOrientaion1 = sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);

    // setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

    imageView = (ImageView) findViewById(R.id.imgError);

    getWindow().setFormat(PixelFormat.UNKNOWN);
    surfaceView = (SurfaceView) findViewById(R.id.camerapreview);
    surfaceHolder = surfaceView.getHolder();
    surfaceHolder.addCallback(this);
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

    controlInflater = LayoutInflater.from(getBaseContext()); …

我想创建一个支持所有屏幕大小的XML布局.在XML中,第一个元素是ImageView第二个元素,TextView第三个元素是ButtonImage.所以TextView应该是所有设备(小型,中型,大型,xLarge等)的确切位置.

我怎样才能做到这一点？

这里的XML输出应该是这样的:

这是我为普通/中等布局创建的XML文件:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:src="@drawable/firstscreenimage" />

<RelativeLayout
    android:id="@+id/relativeLayout2"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true" >

    <EditText
        android:id="@+id/campa"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_toRightOf="@+id/textView3"
        android:ems="10" >

        <requestFocus />
    </EditText>

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:gravity="center"
        android:text="My Current\n Campaign" />
</RelativeLayout>

<RelativeLayout
    android:id="@+id/relativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_above="@+id/relativeLayout2"
    android:layout_alignParentLeft="true" >

    <Button
        android:id="@+id/button1"
        android:layout_width="210dp"
        android:layout_height="210dp"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:background="@drawable/animation0" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBaseline="@+id/button1"
        android:layout_alignBottom="@+id/button1" …

我有一个Android应用程序,其功能是将图像上传到AWS(亚马逊网络服务)S3.当我第一次成功运行此应用程序图像上传时.但是当我第二次上传图片时,我收到了以下错误.我该如何解决这个错误？

这是错误:

这是我的活动:

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // getActionBar().setDisplayShowTitleEnabled(false);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    s3Client.setRegion(Region.getRegion(Regions.US_WEST_2));
    setContentView(R.layout.submit);

    submit = (Button) findViewById(R.id.buttonsubmit);
    submit.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub

            Uri selectedImage = Uri.parse(Environment
                    .getExternalStorageDirectory().getPath()
                    + File.separator
                    + "Pictures"
                    + File.separator
                    + "Spike" + File.separator + "cubicasa.jpg");

            new S3PutObjectTask().execute(selectedImage);



        }
    });

}
private class S3PutObjectTask extends AsyncTask<Uri, Void, S3TaskResult> {

    ProgressDialog dialog;

    protected void onPreExecute() {
        dialog = new ProgressDialog(SubmitActivity.this);
        dialog.setMessage(SubmitActivity.this.getString(R.string.uploading));
        dialog.setCancelable(false);
        dialog.show();
    }

    protected S3TaskResult doInBackground(Uri... uris) …

我有一个自定义相机应用程序。我需要自定义相机捕获的图像的元数据。我在解码字节数组（Constant.imageData1 = data;）之前保存了字节数据，并将其保存到字节类型的常量类中，在使用此字节数据之前，我将其转换为字符串。当我要使用 ExifInterface 执行它并将其显示到日志时，应用程序崩溃了。

这是我的 OnPictureTaken 方法：

PictureCallback mPicture = new PictureCallback() {
    @Override
    public void onPictureTaken(byte[] data, Camera camera) {
        Constant.imageData1 = data;
        Log.e("Camrera", "22222222222222222");
        BitmapFactory.Options bfo = new BitmapFactory.Options();
        bfo.inDither = false;
        // bfo.inJustDecodeBounds = true;
        bfo.inPurgeable = true;
        bfo.inTempStorage = new byte[16 * 1024];

        Intent intent = new Intent(context, PreviewActivity.class);
        // intent.putExtra("data", data);
        Bitmap bitmapPicture = BitmapFactory.decodeByteArray(data, 0,
                data.length, bfo);
        Matrix matrix = new Matrix();
        if (Constant.result == 180) {
            matrix.postRotate(270);
        }
        if (Constant.result == 270) …